guerin is the director of technology at the scott's valley unified school district. but he does not have contact with students. his alleged crimes are believed to be isolated events with children he met outside of the school more information of the deadliest standing of a teenager in san jose. he is thought to a been stabbed to death tuesday evening following an altercation about a block from san jose high school. the killing is believed to be gang-related. and now there are concerns of possible retaliation and escalation of gang violence in the area it is an unfortunate and never ending cycle. there is no word on the suspects but there are several witnesses helping in the investigation>> a bay area community is mourning the loss of a teenager. she was hit and killed while crossing the street in antioch earlier this week. police say neither speed nor alcohol played a factor in the accident. kron 4's alecia reid reports from antioch where the victims' schoolmates gathered in her memory. >> may the lord help the family there was prayer singing and singingand lots of mo